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Small and highly stable flexible support frame for multifunctional optical mirrors

An optical mirror, high stability technology, applied in the field of space optics, can solve the problems of unfavorable large-scale, large-scale use, flexible structure use and size limitation, flexible structure complex, etc., to achieve convenient design and processing and saving, simple and controllable design variables, good strength effect

Active Publication Date: 2014-10-15
CHANGGUANG SATELLITE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this kind of flexible structure is that it is only suitable for the integrated design of the same metal material as the mirror and the supporting structure. The use and size of the flexible structure are severely limited, and this kind of flexible structure is complex and difficult to process. High cost and long period are not conducive to large-scale and large-scale use

Method used

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  • Small and highly stable flexible support frame for multifunctional optical mirrors
  • Small and highly stable flexible support frame for multifunctional optical mirrors
  • Small and highly stable flexible support frame for multifunctional optical mirrors

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0017] like Figure 1-2 As shown, the flexible support frame of the small-scale high-stable multifunctional optical mirror includes: the flexible support frame 8, the flexible support frame 8 is a rectangular structure containing a hollow circle, and the mechanical connection platform of the rectangular boss structure with the same width is processed on both sides 5. Two mechanical interfaces 1 are processed at both ends of the mechanical connection platform 5, and the optical-mechanical connection platform 7 is processed along the hollow circle with a ring-shaped convex structure. The bottom surface of the optical-mechanical connection platform 7 is processed with a concave structure, and the mechanical connection platform 5 and the optical-mechanical Process concave structure unloading substrate 6 between connecting platforms 7, unloading slit 3 for processing circular topological structure on unloading substrate 6, topological structure axis O 1 o 1 'Coaxial with the axis ...

specific Embodiment approach 2

[0021] The flexible support frame 8 and the optical reflector 9 adopt a split structure, which increases the manufacturability and versatility. When the optical reflector is made of metal or SiC, the connection between the flexible support frame and the optical reflector 9 is through an optical-mechanical interface 2. The pin hole 4 is connected to the optical-mechanical connection platform 7. The pin hole 4 ensures the connection positioning accuracy and repeated installation positioning accuracy of the optical-mechanical connection platform 7 and the optical mirror 9, and unloads the substrate 6 to the mechanical connection platform 5 and the optical-mechanical connection platform 7. The generated assembly stress and thermal stress are evenly distributed to prevent stress concentration, and the unloading slit 3 on the unloading substrate 6 is divided into two parts, the inner layer and the outer layer, the inner layer is connected to the optical-mechanical connection platform ...

specific Embodiment approach 3

[0023] The material used for the flexible support frame 8 can be selected from Invar material that matches the thermal expansion coefficient of the material used in the optical reflector 9, so as to minimize the influence of thermal mismatch on the mirror surface shape of the optical reflector, or use tensile strength Titanium alloy material with higher strength and better processing performance.

[0024] The flexible support frame uses Invar from Beijing Yuhang Yincai Technology Development Co., Ltd. or titanium alloy (TC4) from Shenyang Institute of Metal Research, Chinese Academy of Sciences as the structural material, and undergoes multiple vacuum aging treatments during the specific processing process. The unloading slits 3 of the inner and outer layers of the flexible support frame are processed by wire-cutting in a slow-moving manner, and the surface quality of the parts is strictly controlled. Its surface finish is 0.6-0.9, without machining tool marks, and the corners...

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Abstract

A small flexible support frame for high-stable multifunctional optical mirrors belongs to the field of space optics technology. In order to solve the problem that the existing support mechanism is only suitable for mirrors of the same material, and the use and size are limited, the flexible support frame of the present invention is Rectangular structure with a hollow circle, a rectangular convex structure mechanical connection platform of the same width is processed on both sides, two mechanical interfaces are processed at each end of the mechanical connection platform, and an optical-mechanical connection platform with a circular convex structure is processed along the hollow circle, and the optical-mechanical connection The bottom surface of the platform is processed with a concave structure, the sinking structure unloading substrate is processed between the mechanical connection platform and the optical-mechanical connection platform, and the unloading slit of the circular topological structure is processed on the unloading substrate. The integrated design of the flexible support frame is suitable for the scope of application. Wider and more adaptable for increased safety and reliability.

Description

technical field [0001] The invention belongs to a flexible support frame for a small-sized, highly stable and multifunctional optical reflector, which relates to the technical field of space optics. Background technique [0002] The flexible support frame is a passive adjustment structure that isolates or reduces the adverse effects on the surface shape accuracy of the optical mirror caused by factors such as temperature changes in the working environment and assembly stress through the deformation of the flexible link. This type of structure has the advantages of simple structure, no hysteresis, no crawling, and can withstand the influence of various harsh environments in space. It is currently widely used in the support structure of reflective optical mirrors in space optical loads. [0003] At present, all spatial reflective optical mirrors use flexible structures to achieve high-precision and high-stability support designs. The closest prior art with the present inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16M11/20G02B7/182
Inventor 闫勇金光安源姚劲松贾学志张雷王栋谷松
Owner CHANGGUANG SATELLITE TECH CO LTD
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